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Biology Questions and Answers for PSC/SSC Examinations

1.All the glands of the human body are made up of which type of tissues?
A. Epithelial tissue
2.Which vitamin also acts as a hormones?
A. Vitamin D
3.Whch is the largest bone of human body?
A. Femur

4.What is the name of the gland in which one cell takes part in secretion?
A. Unicellular gland
5.Which is the smallest bone of human body?
A. Stapes
6.What is an example for Unicellular gland?A. Goblet cell
7.What is the name of the units by which kidneys are made up of?
A. Nephrons
8.Which vitamin also acts as an anti- oxidant?
A. Vitamin E
9.Which type of glands directly discharge hormones into blood?
A. Endocrine glands
10.The deposition of cholesterol in the walls of arteries due to which they become narrow & hinder the
blood flow is known as—?
A. Atherosclerosis
11.Which type of glands discharge hormones with the help of ducts?
A. Exocrine glands
12.Who invented the electrocardiogram?
A. Willem Einthoven
13.The salivary glands are example for—— glands?
A. Exocrine glands
14.Which vitamin acts as regulators of cell & tissue growth and differentiation?
A. Vitamin A
15.The duodenum, jejunum & ileum are the three regions of—?
A. Small intestine

16.Which is the only vein that carries pure blood?
A. Pulmonary vein
17.Which gland works both as an endocrine & exocrine gland?
A. Pancreas gland
18.What is the average value of blood pressure in humans?
A. 120-80 mm of Hg
19.Who discovered different blood groups?
A. Karl Landsteiner

20.The vessels that carry the blood towrds the heart are called—?
A. Veins
21.Which vitamin helps for blood coagulation?
A. Vitamin K
22.What is the chief conducting tissue of human body?
A. Blood
23.Normally, blood clots with in—- minutes of exposure to air?A. 3-10 minutes
24.Which blood group has antigen ‘B’ and antibody ‘anti-a’?
A. B group
25.Which part of the digestive system is responsible for the absorption of food?
A. Small intestine
26.The blood group having antigen ‘A & B’, but no antibody is —–?
A. AB group

27.Which vitamin is also known as ‘Vitamin H’?
A. Biotin
28.The type of nutrition in which food is obtained from other organisms are known as—-?
A. Heterotrophic type
29.Which blood group is known as ‘Universal donor’?
A. O-ve
30.The cell free part of blood which takes part in excretion & respiration is—–?
A. Plasma

31.What is the hardest tissue of the human body?
A. Bone
32.The thick & tough envelop around the bone is known as—-?
A. Periosteum
33.The red bone marrow is present in wich part of the bone?
A. Spongy part of bone34.Which minerals are required for the contraction of muscles?
A. Calcium & Sodium
35.Which type of nutrition is occurring in animals?
A. Heterotrophic
36.Whcih rays of the sunlight is responsible for producing vitamin D in the skin?
A. Ultraviolet rays
37.Who was the first scientist to propose the name ‘Vitamin’ in 1912?
A. Kasimir Funk
38.Which part of the human digestive system is involved in the absorption of water?
A. Large intestine
39.What is the name of the tube that passes the broken food in to the stomach?
A. Oesophagus
40.The respiration in the presence of oxygen is known as—-?
A. Aerobic
41.The respiration in the absence of oxygen is—?
A. Anaerobic
42.Which blood cells contain haemoglobin?
A. Red blood cells

43.Which vitamin contains cobalt?
A. Vitamin B12
44.Which metal is present in haemoglobin?A. Iron
45.Humans possess— blood circulatory system?
A. Closed
46.What is average weight of human heart?
A. 280-340 grams
47.What is the name of the blood vessels that carry blood to the body parts?
A. Artery
48.Which is the only artery that carries impure blood?
A. Pulmonary artery
49.The graphical record of chemical exchanges to produce electric current within the heart is called?
50.The hardening of the arteries due to the formation of plaques & calcification in their walls is known
A. Arteriosclerosis
51.Which part of the blood contains proteins, salts & hormones?
A. Plasma
52.Which vitamin is known as ‘the sex vitamin’?
A. Vitamin E
53.The pain in the chest, caused when enough oxygen does not reach the heart muscles is known as—?
A. Angina pectoris
54.Which organ of the human body filters blood & excretes water and other toxic substances?
A. Kidneys

55.The pineal glands, pituitary, thyroid & adrenal glands are examples of—?
A. Endocrine glands
56.Which is the tubular component of nephrons?
A. Bowman’s capsule

57.Which type of bone marrow is present in shaft of long bones?
A. Yellow bone marrow
58.Which blood group has antigen ‘A’ and antibody ‘anti-b’?
A. A group
59.What is the total numebr of bones in humans?
A. 206
60. 98.5 percent of oxygen is transported by blood with the help of respiratorypigment—?
A. Haemoglobin